<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>购物车</title>
    <%@include file="/pages/common/head.jsp" %>

    <script type="text/javascript">
        $(function () {
            //给输入框绑定失去焦点事件 ----> change事件（内容发生改变事件）更好
            $("input.update").change(function () {
                //获取商品名字
                var name = $(this).parent().parent().find("td:first").text();
                //获取商品数量
                var count = this.value;
                if (confirm("你确定要将【" + name + "】商品数量修改为：" + count + "吗?")) {
                    var id = $(this).attr("bookId");
                    location.href = "cartServlet?action=updateCount&id=" + id + "&count=" +count;
                } else {
                    //defaultValue属性是表单项DOM对象的属性，表示的是默认的value属性值
                    this.value = this.defaultValue;
                }
            });

            //给删除绑定单击事件，给用户一个友好的提醒
            $("a.deleteCartItem").click(function () {
                return confirm("你确定要删除" + $(this).parent().parent().find("td:first").text() + "？");
            });
            //给清空购物车绑定单击事件，给用户一个友好的提醒
            $("a.clearCart").click(function () {
                return confirm("你确定要删除清空购物车？");
            });
        })
    </script>
</head>
<body>

<div id="header">
    <img class="logo_img" alt="" src="static/img/logo.gif">
    <span class="wel_word">购物车</span>
    <%@include file="/pages/common/success.jsp" %>
</div>

<div id="main">

    <table>
        <tr>
            <td>商品名称</td>
            <td>数量</td>
            <td>单价</td>
            <td>金额</td>
            <td>操作</td>
        </tr>
<%--        购物车有商品时，显示商品信息，没有商品时，输出语句--%>
        <c:if test="${ empty sessionScope.cart.items}">
            <tr>
                <td colspan="4">您的当前购物车是空的！赶紧去添加商品把！</td>
                <td><a href="index.jsp">去添加</a></td>
            </tr>
        </c:if>
        <c:if test="${not empty sessionScope.cart.items}">
            <c:forEach items="${sessionScope.cart.items}" var="book">
                <tr>
                    <td>${book.value.name}</td>
                    <td>
                        <input style="width: 80px" type="text" class="update" bookId="${book.key}"
                               value="${book.value.count}">
                    </td>
                    <td>${book.value.price}</td>
                    <td>${book.value.totalPrice}</td>
                    <td><a class="deleteCartItem" href="cartServlet?action=deleteItem&id=${book.value.id}">删除</a></td>
                </tr>
            </c:forEach>
        </c:if>
    </table>
    <%--    购物车为空时，菜单栏隐藏--%>
    <c:if test="${not empty sessionScope.cart.items}">
        <div class="cart_info">
            <span class="cart_span">购物车中共有<span class="b_count">${sessionScope.cart.totalCount}</span>件商品</span>
            <span class="cart_span">总金额<span class="b_price">${sessionScope.cart.totalPrice}</span>元</span>
            <span class="cart_span"><a class="clearCart" href="cartServlet?action=clear">清空购物车</a></span>
            <span class="cart_span"><a href="orderServlet?action=createOrder">去结账</a></span>
        </div>
    </c:if>
</div>

<%@include file="/pages/common/footer.jsp" %>
</body>
</html>